INTRODUCTION: Restoring the joint line (JL) in primary as well as revision total knee arthroplasty (TKA) influences clinical results as well as long-term survival rates. Whereas studies agree about the negative effect of JL alteration, the reference system of choice is unclear. The purpose of the present study was to evaluate the effect of JL allocation comparing a ratio to a distance method on clinical outcome following revision TKA. MATERIALS: After a miminum follow-up of 2 years JL reconstruction was evaluated in 69 consecutive patients after revision TKA. Clinical results were obtained using the Knee Society Score (KSS). We used the Figgie distance method in comparison to the epicondylar ratio method. RESULTS: The mean postoperative KSS significantly improved in all 69 revision TKAs compared to the preoperative value. Patients with a positive JL reconstruction in reference to the epicondylar ratio showed significantly better KSS results compared to knees without restoration of the JL. The degree of JL reconstruction depending on the distance method showed no effect on postoperative KSS results. CONCLUSION: We recommend the epicondylar ratio to calculate the physiological JL rather than JL allocation by a distance.
INTRODUCTION: Restoring the joint line (JL) in primary as well as revision total knee arthroplasty (TKA) influences clinical results as well as long-term survival rates. Whereas studies agree about the negative effect of JL alteration, the reference system of choice is unclear. The purpose of the present study was to evaluate the effect of JL allocation comparing a ratio to a distance method on clinical outcome following revision TKA. MATERIALS: After a miminum follow-up of 2 years JL reconstruction was evaluated in 69 consecutive patients after revision TKA. Clinical results were obtained using the Knee Society Score (KSS). We used the Figgie distance method in comparison to the epicondylar ratio method. RESULTS: The mean postoperative KSS significantly improved in all 69 revision TKAs compared to the preoperative value. Patients with a positive JL reconstruction in reference to the epicondylar ratio showed significantly better KSS results compared to knees without restoration of the JL. The degree of JL reconstruction depending on the distance method showed no effect on postoperative KSS results. CONCLUSION: We recommend the epicondylar ratio to calculate the physiological JL rather than JL allocation by a distance.
Authors: Tilman Graulich; Caroline Kranz; Dafang Zhang; Marcus Oergel; Tarek Omar Pacha; Marco Haertle; Mohamed Omar; Christian Krettek; Martin Panzica Journal: In Vivo Date: 2020 May-Jun Impact factor: 2.155
Authors: Tilman Pfitzner; Philippe Moewis; Patrick Stein; Heide Boeth; Adam Trepczynski; Philipp von Roth; Georg N Duda Journal: Knee Surg Sports Traumatol Arthrosc Date: 2017-06-27 Impact factor: 4.342
Authors: Arnaud Clavé; Goulven Le Henaff; Thomas Roger; Paul Maisongrosse; Christian Mabit; Frédéric Dubrana Journal: Int Orthop Date: 2016-01-08 Impact factor: 3.075
Authors: Serdar Yilmaz; Deniz Cankaya; Alper Deveci; Ahmet Firat; Bulent Ozkurt; Murat Bozkurt Journal: Indian J Orthop Date: 2016 Mar-Apr Impact factor: 1.251